Method to improve heating temperature of heat pump and second-type high temperature absorption heat pump

A method of improving a heating temperature of a heat pump comprising steps of:

• a dilute solution of an absorber (D1) passing through a solution heat exchanger (G1) and then entering a generator (A1), and then heating the dilute solution by a residual heat medium flowing through the generator (A1) for releasing a refrigerant vapor to provided to a condenser (B1), a concentrated solution of the generator (A1) flowing through a solution pump (E1), the solution heat exchanger (G1) and entering the absorber (D1) for absorbing heat and being partially vaporized, and then entering a steam bleeding chamber (1), the steam bleeding chamber (1) releasing the refrigerant vapor to enter the condenser (B1), the concentrated solution flowing through a new added solution pump (3), a new added solution heat exchanger (5) and then connecting a new added absorber (2), then the concentrated solution absorbing the refrigerant vapor came from the absorber (D1) and providing a high temperature heating load to the heated medium, the dilute solution of the new added absorber (2) flowing through the new added solution heat exchanger (5) and then entering the absorber (D1) for absorbing the refrigerant vapor came from an evaporator (C1) and releasing heat,
• the refrigerant vapor, entering the condenser (B1) from the generator (A1) and the new added steam bleeding chamber (1), releasing heat to a cooling medium and becoming a liquid refrigerant, the liquid refrigerant flowing through a liquid refrigerant pump (F1) and then being divided into two parts, wherein a part of the liquid refrigerant flows through a new added throttle (6) and then enters the evaporator (C1) for absorbing residual heat and becoming refrigerant vapor provided to the absorber (D1);
• in the absorber (D1), the refrigerant vapor is absorbed by the solution and releases heat to the other road of solution and liquid refrigerant which flows through absorber (D1);
• the other part flows through absorber (D1) and absorbs heat becoming refrigerant vapor provided to the new added absorber (2);
• at first, the concentration of the solution entering the new added absorber (2) is promoted by the generator (A1) for the first time;
• and then, the solution concentration is improved by the absorber (D1) and the new added steam bleeding chamber (1) for the second time;
• the refrigerant vapor entering the new added absorber (2) is produced by the heating of the absorber (D1);
• the heating temperature of the new added absorber (2) is higher than the one of the absorber (D1), thus achieving the two stages improvement of the residual heat temperature.